Air moistener



Sept. 27, 1927. c. GRAB AIR MOISTENER Filed Sept. 28. 1925 Jm/enior Carl Gra b Patented Sept. 27, 1927.

UNITEDSTATES PATENT OFFICE.

cm GRAB, or L nwIesnArnn-oN-rHnamine; GERMANY.

\AIR morsrnnnn.

Application filed September 28, 1925, Serial No. 59,154, and in Germany September 20, 1.924.

The present invention concerns an air moistener to be laced upon heating appliances, especia ly for central-heating bodies. With such air moisteners it is necessary, in order to obtain a suflicient moistening of the air and a simultaneous recipitation of the dust particles, that he entire warm air ascending from the heating body flows along the moist surface so that the air is forced on the one hand to saturate itself with a certain percentage of moisture and on the other hand to deliver its dust and soot particles to the moist surface.

The present invention fulfills these requirements in such a manner that the air is conducted along the entire moist surface of the absorbing material. To attain the best result with the present apparatus, it is necessary to extend the moist surface as much as possible in order to form a very large absorbing surface, and to give to this surface an almost horizontal position so that a great quantity of air can come in contact with this moist surface.

It is further preferable to arrange at the bottom of the moistening apparatus, two clamping walls which clamp the heating body up to a sufiicient depth, and that on top of this apparatus the absorbing body forms a roof or summit, through which the air can escape in flowing along the absorbing surface.

This arrangement produces an air draught, always acting in a determined direction. and avoids theformation of any inert air layer which would render the action of the apparatus inefiicient. With this arrangement no air can flow along the sides of the heating body without being forced the apparatus accomplishing thus the greatest possible moistening, and cleaning, of the air.

In order that the invention may be clearly understood, several forms of construction of the invention are shown, by way of example, on the accompanying drawings, in which 1- Fig. 1 is a top view of the moistening apparatus with a sheet of absorbing mate rial laid thereon.

Fig. 2 is a similar view of the apparatus shown in Fig; 1, the sheet of absorbing material being removed. I

Fig. 3 is an end elevation of the apparatus shown in Fig. 4.

to pass through the moistening apparatus,

Fi 4 is a side elevation of the apparatus s own in Fig. 3, the absorbing material being removed.

According \to the construction shown in Figs. 1 to 4, themoistener consists of the two longitudinal water receptacles h having between them the central air channel 2'. The longitudinal water compartments communicate with one another by cross channels A at the rear and front ends, which channels have openings 8 in the extreme bottom parts of the two longitudinal partition walls. At the bottom of the longitudinal sides of the apparatus =two continuous clamping walls Z are fixed which extend for a certain distance over the several heating elements m. The air ascending between the several -heating elements can therefore not escape and is forced to enter the central air channel a. This air channel 71 is, in the form of construction shown in Figs. 1-4 formed of bows n for the support of the absorbent sheet soldered to the walls of the air channel, or fixed in any other suitable manner, preferably on the side walls of the air channel so as to form a kind of roof over the apparatus serving to carry the absorbing substance 0.

In this form of apparatus the absorbing material 0 is not laid directly over the parti ing forced to flow along the moist absorbing material 0 is saturated with moisture, the contact surface of the absorbing material retaining at the same time the dust and like particles.

The longitudinal clamping not only to conduct the air but fulfill simultaneously the requirement of supporting the apparatus on the heating body. These walls are formed of flexible elastic material so that they can be bent and adjusted to fit upon heating bodies of different breadths by bending them inwardly or outwardly,

It is to be particularly noted that the essential feature of the invention is the rovision of the channel p below the absor ent sheet, and above the casing'or water receptacle. This channel is open at the ends and walls Z serve forms a free passageway for the moistened ILO absorbent, which by reason of the formation of a layer of stagnant air on the under side greatly impedes the passage of fresh air as well as prevents the moistening of the and a water reservoir located outside of said flue, a sheet of absorbent i'naterial arranged above and over said flue and having its ends depending into the reservoir, a series of arched supports for said absorbent material, attached to said casing, and forming with said sheet a horizontal air channel open at its ends, above the casing, said casing being adapted to rest on the heating appliance, and provided with clamping means for attachment thereto.

2. An air moistener for heating appliances of th radiator type, comprising a substantially rectangular water receptacle adapted to be located above the appliance and rigidly attached thereto and formed with a central air flue open at top and bottom, and a sheet of water absorbent material supported above said flue with its ends depending into the water space and forming a lateral air flue open at its ends for the escape of moistened air, after contact with the absorbent material.

3. An air moistener for heating appliances ot' the radiator type, coi'nprising a casing of substantially rectangular form. having a central vertical air flue open at top and bottom, and a water reservoir located outside of said flue, a sheet of absorbent material arranged above and over said flue-and hav-- ing its ends depending into the reservoir, means for supporting said absorbent: material, at-tache'd to said casing, and forming with said sheet. a horizontal air channel open at its ends, above the casing, said casing being adapted to rest on said heating appliance, and provided with clamping means for attachment thereto.

In testimony whereof I have aliixed my signature.

CARL GRAB. 

